Cisco Cisco Packet Data Gateway (PDG)
System Operation and Configuration
▀ Understanding the ASR 5000 Boot Process
▄ ASR 5000 System Administration Guide, StarOS Release 18
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Understanding the ASR 5000 Boot Process
Part of the configuration process requires that you allocate hardware resources for processing and redundancy.
Therefore, before you configure the system, it is important to understand the boot process which determines how the
hardware components are brought on line.
Therefore, before you configure the system, it is important to understand the boot process which determines how the
hardware components are brought on line.
The following flowchart shows each step in the startup process. For additional information about system configuration
files, refer to the Understanding Configuration Files section.
files, refer to the Understanding Configuration Files section.
Figure 2.
ASR 5000 Boot Process Flowchart
The following steps describe the system’s boot process:
Step 1
When power is first applied to the chassis, or after a reboot, only the SMC slots (slots 8 and 9) receive power.
Therefore, the SMCs are the first cards to boot and their LEDs are the first to light up. After the system confirms that
cards are located in slots 8 and 9, power is quickly applied to the SPIOs in slots 24 and 25.
Therefore, the SMCs are the first cards to boot and their LEDs are the first to light up. After the system confirms that
cards are located in slots 8 and 9, power is quickly applied to the SPIOs in slots 24 and 25.
Step 2
During the startup process, each card performs a series of power-on self tests (POSTs) to ensure that the hardware is
operational.
operational.